package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController
@RequestMapping("/admin/dish")
@Slf4j
@Api(tags = "菜品相关接口")
public class DishController {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Autowired
    private DishService dishService;
    /**
     * 新增菜品
     * @param dto
     * @return
     */
    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dto) {
        log.info("新增菜品：{}", dto);
        dishService.saveWithFlavor(dto);

        // 清理缓存数据，只需要清理新增菜品所属分类下的缓存即可
        String key = "dish_" + dto.getCategoryId();
        redisTemplate.delete(key);
        return Result.success();
    }

    /**
     * 菜品分页查询
     * @param dishPageQueryDTO
     * @return
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页查询")
    public Result<PageResult> page(DishPageQueryDTO dishPageQueryDTO) {
        log.info("菜品分页查询：{}", dishPageQueryDTO);
        PageResult pageResult = dishService.page(dishPageQueryDTO);
        return Result.success(pageResult);
    }

    /**
     * 批量删除菜品
     * @param ids
     * @return
     */
    @DeleteMapping
    @ApiOperation("批量删除菜品")
    public Result delete(@RequestParam("ids") List<Long> ids) {
        log.info("批量删除菜品：{}", ids);
        dishService.deleteBatch(ids);

        // 删除的菜品可能涉及多个分类，如果要知道删除了哪些分类下的菜品，需要查询数据库，很麻烦，方便起见，直接删除所有分类的缓存
        Set<String> keys = redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);
        return Result.success();
    }

    /**
     * 根据id查询菜品和对应口味
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    @ApiOperation("根据id查询菜品和对应口味")
    public Result<DishVO> getById(@PathVariable Long id) {
        log.info("根据id查询菜品：{}", id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);
        return Result.success(dishVO);
    }

    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO) {
        log.info("修改菜品：{}", dishDTO);
        dishService.updateWithFlavor(dishDTO);

        // 存在特殊情况——修改分类，这样就涉及到两个分类的加减，由于修改操作不常用，可以方便起见
        Set<String> keys = redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);
        return Result.success();
    }

    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Integer categoryId	) {
        log.info("根据分类id查询菜品：{}", categoryId);
        List<DishVO> dishVOList = dishService.list(categoryId);
        return Result.success(dishVOList);
    }

    @PostMapping("/status/{status}")
    @ApiOperation("起售停售菜品")
    public Result startOrStop(@PathVariable Integer status, Long id) {
        log.info("起售停售菜品：{}", status);
        dishService.startOrStop(status, id);

        // 虽然可以通过id查询到对应的菜品分类id，但需要查询一次数据库，得不偿失
        Set<String> keys = redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);
        return Result.success();
    }
}
